JavaScript问题，SetCookie和ReadCookie问题（在线等）

[zhoujing19891020]

<script type="text/javascript">

function SetCookie(usernamevalue,pswvalue,nDays){
var today=new Date();
var expire=new Date();
if(nDays==null||nDays==0) nDays=1;
expire.setTime(today.getTime()+3600000*24*nDays);
document.cookie=escape(usernamevalue+";"+pswvalue)+";expires="+expire.toGMTString();
}


function ReadCookie(v){ //value为usernamevalue+";"+pswvalue
var theCookie=""+document.cookie;
alert(theCookie);
var ind=theCookie.indexOf(v);
alert(ind);
if(ind==-1||cookiename=="")
return "";
return unescape(theCookie.substring(ind,ind+v.length));
}

function init(){
var a=222;
var b=333;
SetCookie(a,b,7);
var ind=ReadCookie(a+";"+b);
alert(ind);
}
</script>

[deoing]

把问题描述出来，方便帮助解决啦。

[不訴離傷]

function SetCookie(usernamevalue,pswvalue,nDays){
    var today=new Date();
    var expire=new Date();
    if(nDays==null||nDays==0) nDays=1;
    expire.setTime(today.getTime()+3600000*24*nDays);
    document.cookie=escape(usernamevalue+";"+pswvalue)+";expires="+expire.toGMTString();
}


function ReadCookie(v){ //value为usernamevalue+";"+pswvalue
    v=escape(v);
    var theCookie=""+document.cookie;
    alert(theCookie);
    var ind=theCookie.indexOf(v);
    alert(ind);
    if(ind==-1||ind=="")
    return "";
    return unescape(theCookie.substring(ind,ind+v.length));
}

function init(){
    var a=222;
    var b=333;
    SetCookie(a,b,7);
    var ind=ReadCookie(a+";"+b);
    alert(ind);
}

[不訴離傷]

v=escape(v);
缺少这一步，还有里面有个cookiename应该是ind吧

[wwfgu00ing]

  String.prototype.Trim = function()
  {
      return this.replace(/^\s+/g,"").replace(/\s+$/g,"");
  }
  
  function JSCookie()
  {
      this.GetCookie = function(key)
      {
        var cookie = document.cookie;
        var cookieArray = cookie.split(';');
        var getvalue = "";
        for(var i = 0;i<cookieArray.length;i++)
        {
            
            if(cookieArray[i].Trim().substr(0,key.length) == key)
            {
                getvalue = cookieArray[i].Trim().substr(key.length + 1);
                break;
            }
        }

        return getvalue;
    };
    this.GetChild = function(cookiekey,childkey)
    {
        var child = this.GetCookie(cookiekey);
        var childs = child.split('&');
        var getvalue = "";
        
        for(var i = 0;i < childs.length;i++)
        {
            if(childs[i].Trim().substr(0,childkey.length) == childkey)
            {
                getvalue = childs[i].Trim().substr(childkey.length + 1);
                break;
            }
        }
        return getvalue;
    };
    this.SetCookie = function(key,value,expire,domain,path)
    {
        var cookie = "";
        if(key != null && value != null)
            cookie += key + "=" + value + ";";
        if(expire != null)
            cookie += "expires=" + expire.toGMTString() + ";";
        if(domain != null)
            cookie += "domain=" + domain + ";";
        if(path != null)
            cookie += "path=" + path + ";";
        document.cookie = cookie;
    };
    this.Expire = function(key)
    {
        expire_time = new Date();
        expire_time.setFullYear(expire_time.getFullYear() - 1);
        var cookie = " " + key + "=e;expires=" + expire_time + ";"
        document.cookie = cookie;
    }
}
 

用法：
一、设置cookie
var cookie = new JSCookie();
//普通设置
cookie.SetCookie("key1","val1");

[wuyq11]

function SetCookie(name,value)
{
var Days = 30;
var exp = new Date();
exp.setTime(exp.getTime() + Days*24*60*60*1000);
document.cookie = name + "="+ escape (value) + ";expires=" + exp.toGMTString();
}
function getCookie(name)
{
var arr = document.cookie.match(new RegExp("(^| )"+name+"=([^;]*)(;|$)"));
if(arr != null) return unescape(arr[2]); return null;
}
或
指定过期时间：

var myDate = new Date();
myDate.setFullYear(2010, 7, 10);
$.cookie("singleKey", "", "singleKey-value", { expires: myDate, secure: false }) 1天后过期：
var time = Date();$.cookie("singleKey", "", "singleKey-value", { expires: 1, path: "/", secure: false }) 现在什么问题

[whb147]

楼上的几位写得很详细了

[zhoujing19891020]

我把“222；333；expires=。。。"存进Cookie中，但是读时ReadCookie（"222;333"）返回空值，不应该返回空值的啊，不知道为啥！

[zhoujing19891020]

[Quote=引用 5 楼 wuyq11 的回复:]
function SetCookie(name,value)
{
var Days = 30;
var exp = new Date();
exp.setTime(exp.getTime() + Days*24*60*60*1000);
document.cookie = name + "="+ escape (value) + ";expires=" + exp……
[/Quote]

5楼这位大哥，我的问题就是：把“222；333；expires=……"存进Cookie中，但是读时ReadCookie（"222;333"）返回空值，你可以运行看看，不应该返回空值的啊，请高手帮忙！

[zhoujing19891020]

function init(){
var a=222;
var b=333;
SetCookie(a,b,7);
var ind=ReadCookie(a+";"+b);
alert(ind); //返回的是空值，为什么是空值啊？应该不是的啊
}


把“222；333；expires=……"存进Cookie中，但是读时ReadCookie（"222;333"）返回空值，你可以运行看看，不应该返回空值的啊，请高手帮忙！

[zhoujing19891020]

我看迟了，等我看到的时候我明白了，就没看了，谢谢了

[不訴離傷]

我不是写给你了吗，在本地调试了一遍，改好了啊，空值是因为你索引查找的时候，V值没有编码造成的
function ReadCookie(v)函数中
v=escape(v);这样在编码一次，就不会找不到了。